alrite.. currently i have 4 yokohoma avid h4 tires on my '93 integra gsr, (17 inchers) anyways..i want to move up to a "z"rated tire as these yokes are not a "z"rated tire.. now my question is, i can only afford to do two at a time, so if i replace the front tires, is there a chance that there will be "speed wobble"or a "floating" back end with a lower speed rated tire on the back?? any other potential problems i may have in doing so??

thanks for the input..